target/linux/layerscape/patches-5.4/804-crypto-0011-MLK-20204-crypto-caam-remove-deadcode-on-32-bit-plat.patch

   1 From 4269eb560ac34c5974559fe256811c1ac5d764ed Mon Sep 17 00:00:00 2001
   2 From: Franck LENORMAND <franck.lenormand@nxp.com>
   3 Date: Fri, 23 Nov 2018 16:06:45 +0100
   4 Subject: [PATCH] MLK-20204 crypto: caam - remove deadcode on 32-bit platforms
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 When building on a platform with a 32bit DMA address, taking the
  10 upper 32 bits makes no sense.
  11
  12 Signed-off-by: Franck LENORMAND <franck.lenormand@nxp.com>
  13 (cherry picked from commit d3346aaa3fbfaf9b7f827d8554f076e3fc82c35b)
  14
  15 -replace ifdeffery with IS_ENABLED() macro
  16 -change commit headline prefix
  17
  18 Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
  19 ---
  20  drivers/crypto/caam/regs.h | 11 ++++++++---
  21  1 file changed, 8 insertions(+), 3 deletions(-)
  22
  23 --- a/drivers/crypto/caam/regs.h
  24 +++ b/drivers/crypto/caam/regs.h
  25 @@ -173,9 +173,14 @@ static inline u64 rd_reg64(void __iomem
  26
  27  static inline u64 cpu_to_caam_dma64(dma_addr_t value)
  28  {
  29 -       if (caam_imx)
  30 -               return (((u64)cpu_to_caam32(lower_32_bits(value)) << 32) |
  31 -                        (u64)cpu_to_caam32(upper_32_bits(value)));
  32 +       if (caam_imx) {
  33 +               u64 ret_val = (u64)cpu_to_caam32(lower_32_bits(value)) << 32;
  34 +
  35 +               if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
  36 +                       ret_val |= (u64)cpu_to_caam32(upper_32_bits(value));
  37 +
  38 +               return ret_val;
  39 +       }
  40
  41         return cpu_to_caam64(value);
  42  }